This question actually involves two aspects: download Google videos from video.google.com first and then convert them to AVI format.
The tutorial below will take Leawo Free YouTube Downloader and Leawo Free FLV Converter for example to show you how to download Google videos and convert downloaded Google videos to AVI. Leawo Free YouTube Downloader can download Google Videos, videos from YouTube, and other video sharing websites. And Leawo Free FLV Converter can convert those downloaded Google videos to other video formats like AVI and many other more.
Step 1: Launch Leawo Free YouTube Downlaoder, type video.google.com in the address bar.
Step 2: Search and choose one Google video to play. A monitor message prompt from the right bottom corner of screen will remind users that a specific video has been found, ignore it or choose "Don't Ask Me Again" to close this prompt dialog.
Tips: you can also enter the video key words in the searching bar, and choose the target video site where the searching engine is going to perform the video search.
Step 3: Click "Video" tab to check the downloading process of the selected Google video and watch it in the built-in FLV player at the same time.
Step 4: When the downloading completes, indicated by a yellow smiley, click "Download" button to save the downloaded Google video to the appointed folder on your PC. A green tick will appear when the saving process is finished.
Step 5: Click "Convert" button to convert the downloaded Google video to AVI if you want the format conversion.
Step 6: Leawo Free FLV Converter will be invoked now. Select AVI as the target video format and click the green button to convert Google video to AVI immediately.
Reshipment from YouTube World.